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Question

Two cubes have edge lengths in the ratio of 2:3, respectively. The ratio of their volumes is:

A
49
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B
827
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C
23
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D
23
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E
32
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Solution

The correct option is B 827
We know, Volume of cube is V=a3 , where a is the edge of the cube.
Let the edge length of one cube be a and the edge length of another cube be b.
Given, a:b=2:3.
Then, Ratio of volumes is a3b3=(ab)3=(23)3=827=8:27.

Therefore, option B is correct.

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